Automobile transmission-gearing.



1' 1 R. E. WYNN.

AUTOMOBILE TRANSMISSION GEARING.

V APPLIUATION FILED I'BBJIL 1909. 7

955,244,, Patented Apr. 19, 1910 4 BHEBI 8-SHBET 1 Fig.1.

an-vcu for,

Robert E. Wynn R. B. WYNN. AUTOMOBILE TRANSMISSION GEABING APPLIUATIOH TILED FEB-13, 1909.

Patented Apr. 19,1910.

4 SHEETS-SHEET 2.

hwmm Robert 5. Man.

R. B. WYN N. AUTOMOBILE TRANSMISSIOR BEARING. urmmnox rum; 12 3343; 1909.

955 ,244, Patented Apr. 19,1910.

4 SHEETS-SHEET 3= u T m mm diam 19i blesses nvcnloc Haber. E. Wynn Patented Apr. 19, 1910.

4 SHEETS-SHEET 4.

' gum" fox, Robert E. Wynn.

R. E. WYNN.

AUTOMOBILE TRANSMISSION GEABING.

APPLIOATEON FILED T11R13, 1909.

V/l/U//////////////////////////, /1?:'!///// I 99% 1405600 wan/MW. MIWZLWM UNITED STA ES PATENT OFFICE.

sonar 1:. WYNN, or nnownseunc, INDIANA. ASSIGNOR or TWO-SIXTHS TO CHARLES structure. the speed varying, reversing and flange 23 of plate 22 is the on the carrying member.

tion of the opposite side in fragmentary Sleeved npon shaft 10 is a sleeve D. RODEBAUGH, TWO-SIXTIIS GRAVES, ALL OF INDIANAPQLIS,

AUTOMOBILE TBANSMISSION-GEARING.

T all when: it may concern:

Be it linonn that l'QRonrwr citizen of the United Stat-es, residing at Browusburg. in the county of Hendricks and Stateoi' Indiana, have invented certain new and useful Improvements in Automobile 'lransniission- Gearing, of which the following is a specification.

The object of-my invention is to produce a speed varying ditl'erential transmission gearing, especially designed for automobiles. wherein the speed varying transmission and reversing gearing is concentric with the main shaft or'shaft. sections and with the dif-' ferentiaI-gmiring tlnls cmhodying in a single F. 'WYNN, a

ditl'crential nmchanism.

The accompanying drawings illustratemy invention.

' Figure l is an axial section the carrying casing being shown in fragmentary condition: Fig. 2 is an elevation of one side in partial transverse section; Fig. 3 an elevatransverse section; and Fig. 4 tion of another tion.

In the drawings and 11 indicate alined shaft scctions'to the inner adjacent ends of which are secured the central gears 12 anal 12 of the differential mechanism, said gears being of any ordinary and well known type.

13 proa flange or head an axial secemhodnnent of my invenvided at, its inner end with 14 and sleeved upon shaft. 11 is a sleeve la provided at its inner end with a flange or head 16 and secured thereto 'liy suitable means, such as screws 17, is a differential shell 18 within which is mounted a spider 1!) upon which are journaled the planetary differential pinions 20 which serve to connect. the. central ditlcrential gears 12 and 12' in the ordinary well l\'l1()\\'ll manner.

Secured to shell 18 at one: end thereof is the hub or cent ral ring 2! of a plate 22 having an annular llange 23 at. its outer edge. The hub 21 of plate .22 is se ured to shell 18 so as to rotate therewith and conveniently the same screws 1? may be used to hold said huh in position. Splined upon hub 21 is the high speed gear- 21 and splined within low speed gear axially movable The two gears 2-1 both of said gears being Specification of Letters Patent, a lication filed February 13, 1902.

and 25 are intended to coiiperate respectively witlra pair of driving pmions 2 and 25' which are carried upon the driving shaft 26. Means need therefore to be provided for shifting the gears 24 and 2-7 axially into and out of mesh with their driving pinions in such manner that the two gears 24 and 25 cannot simultaneously be thrown into driving engagement. For this purpose I sleeve, upon sleeve 13, the hub 31 of a cam member 32 and said cam member 32 may he rot at-ively adjusted upon sleeve. 13 (though itrotates substantially integrally with said sleeve) by ineansof a shifting collar 33, splined upon hub 31 and provided with a. pin 31 which projects through an angling slot. 35 formed in hub 31, and into an angling slot 36 formed in sleeve 13, the slots 35 and 36 extending hoth axially and angularly in opposite directions so that an axial reciprocation of the shifting collar 33 will cause an angular reciprocation of cam member 32 upon sleeve 13.

Secured to gear 24, and extending through slots 41 formed in cam plate 32 are pins 42 which carry fingers 43 which project; over a cam ring 44 carried by cam member 32 and provided with inclined shoulders 45 with which lingers 43 cotipcrate, a suflieientnumhr-r of pins 42 and fingers 43 being distributed around the gear 24 to operate the same evenly. Similarly gear 25 is provided with 'pinsffl which are projected through slots 51 and are provided at their outer ends with fingers 53 which coiiperate with cam flanges 51 carried by the cam member 32 and provided with inclined shoulders adapted to coi'ipcrate with fingers 53 and inclined in the opposite direction from the inclination of shoulders 45. The eotiperation of fingers 43 with shoulders 45, and fingers 53 with shoulders 53, will serve to draw the gears 24 and 2.- onL of mesh with their driving pinions ill and 25' and in order to positively shift 1 said gears in the opposite direction, I mount upon the inner face of plate 22, a. ring 61 provided at intervals with oppositely projLCilllg fingers 62 and (i3. Fingers 62 are projected inwardly into cot'iperative relation with inclined shonldeisfil formed on the hub of gear 24 while fingers 63 are projected outwardly into eoiiperative relation with inclined shoulders (35 formed in the hub of gear 25, the shoulders 64 and 65 being inthe inner end of- T0 JAMES H KELLY, AND ONE-SIXTH TO GEORGE INDIA NA. a

clined in opposite directions. Ring 61 is t provided with studs 06 projected through slots 67 formed in plate and secured to cam member 32, for rotation therewith, by

means of nuts 68.

In order to rovide a reversing train I se cure to the cm of shell 18 opposite head 21.

the head 71 of a plate 72 rovided at its outer edge with an annular't ange 73 within whi h is Splined the hub of the reversing gear 71 which gear may cotipera'w with either pinion 24 or pinion 25' o".- a special pinion, but which, in the drawings, is shown as cot pcuating m..- t low speed pinion 25'. Sleeved upon sleeve is the U2. 5 of a cam disk 76 which may be rotatively atljusted upon sleeve 15 by means of a shifting outer ends with fingers 81 which coiiperate with cam flanges 85 (Figs. 1 and 3) carried bythe cam disk 76 and provided with in-.

clined shoulders 86 with which fingers 84 cooperate. Arranged on the inner face of plate 72 is a ring 87 provided with spuds SS which project through slots 89 formed in plate 72, and secured by nuts 91 to the earn disk 76, for rotation therewith. Ring 87 is provided with outwardly progeetmg fingers 92 arranged'to' coiiperate with inclined shoulders 93 formed in the hub of "car 74.

The operation is as follows :A movement of shifting collar 77 to the left (F ig. 1) will cause a rotation of the cam disk T6 and ring 87 in the direction indicated by the arrows in Fig. 2, thus causing fingers 92 to engage shoulders 93 so as to more gear 71 axially to the left into mesh-with driving pinion 25', the fingers 84 at the same time sliding down the inclined shoulders 80. A return movement of the shifting collar 77 to the position indicated in Fig. 1 will move disk 76 and ring 87 in the direction opposite to that indicated by the arrows, thus bring ing shoulders 86 into engagement with fingers 84 so as to draw gear 74 back to the position indicated in Fig. 1, the fingers 92 sliding-down shoulders 93 during this operation. It will be seen therefore that a movement of the shifting collar 77 will cause a positive axial movement of gear 7:1 either into or out of engagement with driving pinion 25'. Power transmitted to the reverse driving gear 74 will cause a rotation of the ring-2P1 while-fingers 02 and 03 are at the bottoms of the inclined shoulders 61 and 65 respecti\'cly,.so that both of the gears 24 and 25. are withdrawn from mesh with their 7 driving pinions. A shifting of cam disk 32 in the direction indicated by the arrows in Fig. 3 will draw the inclined shoulders 45 under fingers 13 and drive lingers 2 against and upon shoulders 6-1 so that the high speed gear 24 will be dri en ax ally into mesh with its driving pinion 24. Gear 25 is not atlected by this movement because the cam rings 54 will be driven farther under lingers the high parts of said cam rings being sntiicientiy extended for that purpose as clearly shown in Fig. 3, and fingers (33 will be carried away from shoulders 05. On a return of the shifting collar 33 ti ts medial position, fingers 02 will be drawn back along shoulders 64 and shoulders 45 will be driven under fingers 43 so that gear 2'4 will be positively retracted from its driving pinion. Continued movementof the collar 33 will draw shoulders 55' from undei"fingers 53 and drive fingers 03' upon shoulders 05 so as to project gear 25 to the left (Fig 1) into engagement with its driving pini n 25.

The shifting collars 33 and 7 7 may be actuated in any desired manner by means of separate levers or a selective lever mechanism, but the particular mechanism tor operating these shifting collars forms no part of my present invention.

In Fig. 1'1 show a modified and simplified construction wherein. the several shiftable gears are held in desired relationship by their controlling levers instead of b r shifting cams. In Fig. 4, 100 and 101 indicate two alincd shafts adjacent ends of which carry the central differential gears 10?. and 103 respectively. Journaled upon the adjacent ends of shafts 100 and 101 is the differential shell 101 which carries the usual differential pinions 105 meshing with gears ries a middle speed gear 112 which is cuppedso as to embrace gear 108. Splined upon sleeve 111 is a sleeve 113 which carries a low speed gear 114 which gear is sutticiently cup ed to embrace both gears 108 and 112, said gears 112 and 114 facing gear 107. Sleeve 111 carries a shifting collar 115 by means of which the s eeve and its gear may be shifted axially by any suitable Shlftllg lever 116. Similarly sleeve 113 is provid with a shifting collar 11? adapted to be engaged by shifting lever 118 so that gear 114 may be shifted axially. In ofderto shift gears 107 and 108 axially simultaneously shifting lever 121.

flange 109 is provided with a shifting cellar 119 adapted to be engaged by a suitable Journaled in suitable planes of gear 107 on one si e and ears 108, 112 and 114 on the other side is t e drive shaft 122 carrying a high speed pinion 123 adapted to mesh with the middle speed gear 112, and a low speed reverse pinion 125 adapted to mesh with eitherithe low speed ear 114 or the reverse gear 107. It may be esirable not to depend upon the lever 121 to hold gear 107 against axial movement and therefore some suitable means may be rovided for, this purpose. In the drawings show the differential shell 104 provided with three circumferential bearings between the grooves 131 and the hub 109 provided with a circumferential gearing and axially will positively shift groove 132. Mounted in groove 132 is an expansible rin 33 which is also adapted to takeinto oneo the grooves 131. The adjacent ends of the ring 133 are turned outwardly to form fingers 13 1 adapted to be separated by a wedge 135 carried by a collar 136 mount-ed upon hub 109 and movable into and out of engagement with .the finger 134 by means of alever 137 carried upon lever 121.

I claim as my invention:

1. The combination, with a driving member, of a driven member having its axis at an angle to the axis of the driving memher, a dnvinggearing comprising a pair of alined shaf s, a differential gearing win a main body and gears connecting. said shafts, a plurality of concentric gears carried by the main body of the differential movable thereon, means for axially shifting said concentric gesn; independently, and means emb. died within the structure and rotating therewith to lock the shifts'nle gears in their different relations;

l 2. The combination of a rotatable memher, a concentric ear mounted thereon and axially movable tiereoxn'a pai of shifting members mounted upon the main rotatable member and rotatably adjustable thereon, and intermediate connections between said shifting members and the ear whereby rotative adjustment of the. s iI'ting members 'between said thegear axially in main rotatable 1. A driving gearing comprising a pair of alined shaft sections, a differential gearing connecting said shaft sections, three coaxial driving gears carried by said di fe ential gearing and shiftable axi lly Lilo-Sum, a driving shaft, a pair of driving pinion; arranged in co lipsrative relation "with said driving gears, and means for independently shifting slid driving gears axially into and out of mesh with the driving pinions.

5. A driving gearing comprising a pair f alined shaft sections, a differential gearin connecting said shaft sections, three ooaxifi driving gears married by 581d differential earing and shiftable axially thercon,.- a

riving shaft, pair of drivingpinions arranged in cooperative relation with said driving gears, a pair of shitting members carried on the differential gearing and rotatively adjustable, intermediate connections pair of shifting members and two of the driving g'fiizfS for positive-l" shift- "lag said gears axially in opposite dir .tions, a second pair of shifting elements also 331'- ried by the dillerentif-il gearing and intermediate com'rections between said second air of shifting elements and the remaining living gear for positively axially. shifting: the same.

In witness whereof, I have hereunto set my hand and seal at Indianapolis, Indiana, this 8th day of February, A. D. one thousand nine hundred and nine.

ROBERT E. WYNN. 

